The CEM AT-10 Digital Tachometer is a professional digital RPM meter designed for accurate rotational speed measurement in industrial and mechanical applications. Supporting both contact and non-contact measurement methods, it provides a flexible solution for testing motors, fans, pumps, conveyors, and other rotating equipment. With high measurement accuracy, automatic data hold, and RPM and revolution (REV) counting functions, the AT-10 delivers reliable performance for field and laboratory use.
Features
- Dual measurement capability with both contact and non-contact (laser) RPM measurement
- Wide speed measurement range from 2.5 to 99,999 RPM
- High measurement accuracy of ±0.05% for precise speed analysis
- Optical laser sensor with reflective tape for safe non-contact measurements up to 50 cm
- Contact measurement mode with shaft adapter for direct rotational speed testing
- Large 5-digit LCD display for clear and easy reading of results
- HOLD function to freeze and record stable measurement values
- Ability to measure both RPM (revolutions per minute) and REV (total revolutions)
- Automatic power-off feature for energy saving and extended battery life
- Lightweight, ergonomic, and portable design for field, industrial, and laboratory use
Technical Specifications
| Measurement Type | Contact / Non-Contact |
| Speed Range (RPM) | 2.5 – 99,999 RPM |
| Accuracy | ±0.05% |
| Display | 5-digit wide LCD screen |
| Operating Principle | Optical reflector and contact adapter |
| Memory | Stores last measured value |
| Auto Power Off | Energy-saving mode |
| Power Supply | 4 × 1.5 V AA batteries |
| Weight | Approx. 200 g |



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